Experts use the phrase “effective dose” to describe how much radiation your body absorbs. Different types of tissue are more sensitive than others. The amount you absorb during a CT scan of your belly, for example, is different than the amount during a scan of your head. The unit doctors...
administration for computed tomography scan in emergency: a possible cause of contrast-induced nephropathy[J]. Radiol Res Pract, 2015, 2015: 805786. DOI:10.1155/2015/805786. 原文:全身增强计算机断层扫描在严重创伤救治中的价值。高甲科 冯辉 马丽梅 朱建军 刘励...
下颌骨离体标本进行ProMax 3D Mid扫描,采用5组方案进行扫描,分别为组A:90 kV/6.3 mA, 组B:90 kV/8.0 mA,组C:90 kV/10.0 mA,组D:75 kV/8.0 mA,组E:60 kV/8.0 mA,扫描共得到40个CBCT图像;并记录不同扫描条件下的体表入射剂量(entrance surface dose,ESD)及CT剂量指数(computed tomography dose index...
The puncture time (from the planned CT scan to the post-plugging CT scan) was 20.46 ± 2.92 min, and the radiation dose was 598.93 ± 77.62 mGycm (Table 2). For the patients whose puncture channel was plugged, 109 of them had a CT scan during the continued 30 to 37 ...
Therefore, external factors like surgery, radiation, or chemotherapy have the potential to promote the release of tumor DNA into the bloodstream. Additionally, tumor heterogeneity may also be attributed to this concordance. Our meta-analysis results also show the sensitivity of ctDNA testing using ...
OUTCOME MEASURES Preoperative CT scan utilization and radiation dose, intraoperative radiation dose (fluoroscopy and/or CT) and total-procedure radiation dose (sum of preoperative CT and intraoperative radiation doses), levels fused, operative time, estimated blood loss (EBL), length of stay (LOS),...
The application of lower extremity runoff CTA is increasingly popular; however, at the same time, the radiation dose related to the scan protocol and large scan range for the lower extremities is underexplored. In previous studies, the image quality of DLR was even better despite a dose reductio...
CT scan is associated with a significant dose of radiation, which restricts its application in certain patients, such as pregnant women. MRI does not involve radiation exposure, which allows for frequent repeat imaging and it could be applied in at-risk patients, such as pregnant women18. Furthe...
Clinical data about tumor histology, primary tumor size, prescribed biological effective dose, age, gender, initial stage, were obtained from the institutional database and are summarized in Table 1. Fig. 1 The flow chart describes the number of patients that underwent SBRT in our institution ...
The depiction of bone, cartilage and ligaments in MDCTA with any form of dose reduction was inferior to any CBCTA scan with at least 0.6 mAs per pulse (all p < 0.001). Full-dose MDCTA and low-dose CBCTA were of equal quality for bone tissue visualization (p = 0.326), whereas CBCT...